Custom Keyboard Height and add custom view over custom keyboard in ios

Question

I am going to make a custom keyboard for my app and also implement custom keyboard extension for enhance my application feature at input level,
So i want add "custom view" over my custom keyboard in my app. when i am typing some word at that time add custom view over custom keyboard like gBoard, so how can add custom view and increase size of keyboard more then 216.

Answer 1

you should put this height constraint into viewWillAppear

 CGFloat _expandedHeight = 500;  
 NSLayoutConstraint *_heightConstraint = 

 [NSLayoutConstraint constraintWithItem: self.view 
                                attribute: NSLayoutAttributeHeight 
                               relatedBy: NSLayoutRelationEqual 
                                  toItem: nil 
                               attribute: NSLayoutAttributeNotAnAttribute 
                               multiplier: 0.0 
                                  constant: _expandedHeight];
[self.view addConstraint: _heightConstraint];

NOTE

In iOS 8.0, you can adjust a custom keyboard’s height any time after its primary view initially draws on screen.